I suppose you save the pictures on your PC?
On (almost) each PC is a small program, called Paint. You'll find it when you open 'all programm's' , it's in the same file as the calculator is. ( In Dutch the over-all file is called 'desk programme's' but I have nu idea what the english file is named, it should be something like that)
When you open the paint program, you click on the top left corner to open an image.
Search in your PC for the image you want, and double click on it.
It'll open in Paint . Above your image you'll see the word 'image' click here and you'll see
' morror / rotate' now you can rotate you image every way you want :-) You can also adjust the size there.
I hope this makes sence, it's a bit hard to explain in English . Yust let me know and I'll try to explain better ( I hope).